Lifecycle reference: distinguish deprecation from shutdown

AI Model Deprecation Tracker

Track every deprecated AI model across providers. See replacements, compare costs, and migrate before shutdown.

11
Selected Text/API Records
5
Providers Affected
100%
Have Replacements
↑47%
Avg. Cost Increase

Lifecycle deadlines, checked October 15

IdentifierStatus nowShutdownReplacement
gpt-4o-2024-08-06; gpt-4o-2024-11-20; gpt-4o-mini-2024-07-18; gpt-4.1-2025-04-14; gpt-4.1-mini-2025-04-14Active but deprecated; affected fine-tunes follow their base2027-01-14gpt-6-luna; evaluate behavior before migration
gpt-5.1; gpt-5.3-codexDeprecated, still callable2027-04-01gpt-6-sol
gpt-5.4-nanoDeprecated, still callable2027-04-01gpt-6-luna
tts-1; tts-1-hd; gpt-4o-mini-tts-2025-03-20; gpt-4o-mini-tts-2025-12-15Deprecated, still callable2027-01-06gpt-realtime-2.1-mini
gemini-2.5-flash-imageUncertain: official sources conflictPricing page: 2026-10-02; lifecycle page: 2027-03-15gemini-3.1-flash-lite-image; endpoint availability not tested
gemini-3.7-flashDeprecated; requests route to replacementNo shutdown date announcedgemini-3.8-flash
gemini-3.5-flashDeprecated; requests route to replacementNo shutdown date announcedgemini-3.6-flash
deep-research-pro-preview-12-2025Deprecated2026-10-23deep-research-preview-04-2026 or deep-research-max-preview-04-2026
antigravity-preview-05-2026Discontinued2026-10-05antigravity-preview-09-2026

Sources: OpenAI and Google. TTS and managed-agent migration can change interfaces and billing units, not only model names. Recheck the OpenAI records on January 6 and April 1, 2027; these are scheduled dates, not early discontinuations.

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📅 Deprecation Timeline

May 2026
DeepSeek V3 deprecated
Replaced by DeepSeek V4 Flash — 48% cheaper, 2× faster
May 2026
Gemini 2.0 Flash & Flash Lite deprecated
Replaced by Gemini 3 Flash and 3.1 Flash-Lite — better quality at similar prices
June 15, 2026
Claude 4 Opus & Sonnet retired
Replaced by Claude Opus 4.8 and Sonnet 4.6 — 67% cheaper, improved reasoning
June 2026
Jamba 1.5 Large deprecated
Replaced by Jamba 1.7 Large — same price, better performance
January 6 / April 1, 2027
Scheduled OpenAI shutdowns
Older TTS identifiers end January 6; GPT-5.1, GPT-5.3-Codex and GPT-5.4-Nano end April 1. Deprecation is not immediate removal.
August 17, 2026
Imagen 4 (Standard, Ultra, Fast) shutdown
Replaced by Gemini 3.1 Flash Image ("Nano Banana") — new architecture, different pricing
August 26, 2026
OpenAI Assistants API (v2) shutdown
Replaced by Responses API — stateless architecture, developers manage their own state
🚨 Migration urgency

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Frequently Asked Questions

Which AI models are deprecated in 2026? +
OpenAI deprecated GPT-5.1, GPT-5.3-Codex and GPT-5.4-Nano on October 1, 2026; shutdown is scheduled for April 1, 2027. Older TTS identifiers end January 6. They remain callable until shutdown. See the current deadline table and provider notices rather than assuming every deprecated model has already stopped serving.
What happens when an AI model is deprecated? +
Deprecated models stop receiving new features, may have reduced reliability, and eventually shut down completely. It's best to migrate to the replacement model before the shutdown date to avoid service interruptions.
How do I migrate from a deprecated AI model? +
Each deprecated model has a recommended replacement. Use APIpulse's free migration tools to compare costs, get copy-paste migration code, and switch in under 5 minutes. Most migrations only require changing the model name in your API calls.
📅 2026 Deprecation Timeline
Interactive timeline of every model deprecation, price change, and new launch in 2026.
See the full timeline →